Just a few years ago, it seemed the nation's good fortune for having discovered abundant fuel to make electricity and manufacture a host of everyday products might be reversed by a handful of critics. But a recent study from the Environmental Defense Fund (EDF) and the University of Texas may be the single most comforting piece of news this year for gas producers, their customers and everyone concerned about emissions and air quality.

We need to do more than just reduce our dependence on oil and gas imported from abroad. We need to reduce our dependence on these fuels, period. True American energy leadership can only be shown by working toward the rapid development of sustainable energy sources.

As we observe Earth Day this year, we recognize the progress we have made to help clean up our nation's air and water and preserve its natural resources, but we also recognize there's still plenty of work to do.

At Santos Dumont Airport in Rio de Janeiro, while waiting for the plane to start taxiing for take off, I glanced at the next plane over and was surprised to read on the engine that it was powered by biofuel.

The Department of Defense is at the genesis of large-scale integration of plug-in electric vehicles into its non-tactical ground fleet as part of efforts toward expanding usage of alternative fuel vehicles.

Senator Bill Nelson (D-Fla.) has a reputation as a staunch advocate for all Floridians and a moderate voice in the increasingly partisan world of national politics. Now, he's a leading responder to the Gulf spill.

Going back to a failed approach and deepening our oil addiction, as Sen. Murkowski's amendment would do, at the very moment a massive spill is devastating families and businesses runs contrary to our national interests.